1 /*
2  * Copyright (C) 2023 The Android Open Source Project
3  *
4  * Licensed under the Apache License, Version 2.0 (the "License");
5  * you may not use this file except in compliance with the License.
6  * You may obtain a copy of the License at
7  *
8  *      http://www.apache.org/licenses/LICENSE-2.0
9  *
10  * Unless required by applicable law or agreed to in writing, software
11  * distributed under the License is distributed on an "AS IS" BASIS,
12  * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
13  * See the License for the specific language governing permissions and
14  * limitations under the License.
15  */
16 
17 #pragma once
18 
19 #include "core-impl/Stream.h"
20 
21 namespace aidl::android::hardware::audio::core {
22 
23 class StreamStub : public StreamCommonImpl {
24   public:
25     StreamStub(StreamContext* context, const Metadata& metadata);
26     // Methods of 'DriverInterface'.
27     ::android::status_t init() override;
28     ::android::status_t drain(StreamDescriptor::DrainMode) override;
29     ::android::status_t flush() override;
30     ::android::status_t pause() override;
31     ::android::status_t standby() override;
32     ::android::status_t start() override;
33     ::android::status_t transfer(void* buffer, size_t frameCount, size_t* actualFrameCount,
34                                  int32_t* latencyMs) override;
35     void shutdown() override;
36 
37   private:
38     const size_t mBufferSizeFrames;
39     const size_t mFrameSizeBytes;
40     const int mSampleRate;
41     const bool mIsAsynchronous;
42     const bool mIsInput;
43     bool mIsInitialized = false;  // Used for validating the state machine logic.
44     bool mIsStandby = true;       // Used for validating the state machine logic.
45 };
46 
47 class StreamInStub final : public StreamIn, public StreamStub {
48   public:
49     friend class ndk::SharedRefBase;
50     StreamInStub(
51             StreamContext&& context,
52             const ::aidl::android::hardware::audio::common::SinkMetadata& sinkMetadata,
53             const std::vector<::aidl::android::media::audio::common::MicrophoneInfo>& microphones);
54 
55   private:
onClose(StreamDescriptor::State)56     void onClose(StreamDescriptor::State) override { defaultOnClose(); }
57 };
58 
59 class StreamOutStub final : public StreamOut, public StreamStub {
60   public:
61     friend class ndk::SharedRefBase;
62     StreamOutStub(StreamContext&& context,
63                   const ::aidl::android::hardware::audio::common::SourceMetadata& sourceMetadata,
64                   const std::optional<::aidl::android::media::audio::common::AudioOffloadInfo>&
65                           offloadInfo);
66 
67   private:
onClose(StreamDescriptor::State)68     void onClose(StreamDescriptor::State) override { defaultOnClose(); }
69 };
70 
71 }  // namespace aidl::android::hardware::audio::core
72